Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. When will the Milky Way collide with the Andromeda Galaxy?

For nearly two decades, astronomers have been asserting that someday, our galaxy will collide with the galaxy Andromeda, and the two will merge. Recently, a group of scientists has challenged the ...

Warning: This graphic requires JavaScript. Please enable JavaScript for the best experience. The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A collision between ...